Re: [TLS] TLS 1.3: Deterministic RSA-PSS and ECDSA

2016-08-09 Thread Peter Gutmann
Tony Arcieri writes: >Do you think we'll see real-world MitM attacks against RSA-PSS in TLS similar >to those we've seen with PKCS#1v1.5 signature forgery, such as BERserk? Not BERserk specifically because that was an attack on the ASN.1, not the signature format. OTOH PSS doesn't encode the ha

Re: [TLS] TLS 1.3: Deterministic RSA-PSS and ECDSA

2016-08-09 Thread Martin Rex
Tony Arcieri wrote: [ Charset UTF-8 unsupported, converting... ] > On Monday, August 8, 2016, Martin Rex wrote: > > > > The urban myth about the advantages of the RSA-PSS signature scheme > > over PKCS#1 v1.5 keep coming up. > > Do you think we'll see real-world MitM attacks against RSA-PSS in TL

[TLS] early IANA code point assignment request for draft-ietf-tls-ecdhe-psk-aead

2016-08-09 Thread Sean Turner
All, We've received a request for early IANA assignments for the 6 cipher suites listed in https://datatracker.ietf.org/doc/draft-ietf-tls-ecdhe-psk-aead/. Please respond before August 23rd if you have concerns about early code point assignment for these cipher suites. J&S __

Re: [TLS] TLS 1.3: Deterministic RSA-PSS and ECDSA

2016-08-09 Thread Tony Arcieri
On Tue, Aug 9, 2016 at 7:16 AM, Martin Rex wrote: > BERserk is an implementation defect, not a crypto weakness. > Hence why I phrased the question the way I did. Per Izu, Shimoyama, and Takenaka 2006, PKCS#1 v1.5 has sharp edges which implementers must avoid (of course, the same can be said of B

Re: [TLS] TLS 1.3: Deterministic RSA-PSS and ECDSA

2016-08-09 Thread Tony Arcieri
It's also worth noting that BERserk is one of many such incidents of this coming up in practice: https://cryptosense.com/why-pkcs1v1-5-signature-should-also-be-put-out-of-our-misery/ On Tue, Aug 9, 2016 at 2:13 PM, Tony Arcieri wrote: > On Tue, Aug 9, 2016 at 7:16 AM, Martin Rex wrote: > >> BER

Re: [TLS] early IANA code point assignment request for draft-ietf-tls-ecdhe-psk-aead

2016-08-09 Thread Martin Thomson
On 10 August 2016 at 04:45, Sean Turner wrote: > We've received a request for early IANA assignments for the 6 cipher suites > listed in https://datatracker.ietf.org/doc/draft-ietf-tls-ecdhe-psk-aead/. > Please respond before August 23rd if you have concerns about early code point > assignment